Baccharis pteronioides is a North American shrub in the family Asteraceae known by the common name yerba de pasmo.Flora of North America, Yerba de pasmo Baccharis pteronioides de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 410. 1836. It is widespread in Mexico (from Chihuahua to Oaxaca)García-Mendoza, A. J. & J. A. Meave. 2011. Diversidad Florística de Oaxaca: de Musgos a Angispermas 1–351. Universidad Nacional Autónoma de México, Ciudad UniversitariaTropicos, specimen listing for Baccharis pteronioides DC.CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F. and also found in the southwestern United States (Arizona, New Mexico, western Texas).Biota of North America Program 2014 county distribution map
Baccharis pteronioides is a shrub up to 100 cm (40 inches) tall, with thick, leathery leaves and many small flower heads. It grows in dry woodlands, grasslands, and canyons.
References
External links Vascular Plants of the Gila Wilderness Pollen Library Virginia Tech, tree identification, yerba de pasmo Asteraceae Baccharis pteronioides DC